Insertion of an Aspartic Acid Moiety into Cyclic Pseudopeptides: Synthesis and Biological Characterization of Potent Antagonists for the Human Tachykinin NK-2 Receptor
作者:Valentina Fedi、Maria Altamura、Giuseppe Balacco、Franca Canfarini、Marco Criscuoli、Danilo Giannotti、Alessandro Giolitti、Sandro Giuliani、Antonio Guidi、Nicholas J. S. Harmat、Rossano Nannicini、Franco Pasqui、Riccardo Patacchini、Enzo Perrotta、Manuela Tramontana、Antonio Triolo、Carlo Alberto Maggi
DOI:10.1021/jm040832y
日期:2004.12.1
A new series of monocyclic pseudopeptide tachykinin NK-2 receptor antagonists has been derived from the lead compound MEN11558. A synthesis for these molecules sharing the same intermediate was designed and performed. The replacement of the succinic moiety with an aspartic acid and the functionalization of its amino group with a wide variety of substituents led to very potent and selective NK-2 antagonists
从先导化合物MEN11558衍生出一系列新的单环假肽速激肽NK-2受体拮抗剂。设计和执行了这些分子共享相同中间体的合成。用天冬氨酸替换琥珀酸部分,并用多种取代基对其氨基进行官能化,产生了非常有效和选择性的NK-2拮抗剂。最好的结果是通过在R的12位氨基酸上插入一个短间隔基与饱和氮杂环(吗啉,哌啶或哌嗪)相连而获得的。该研究产生了化合物54和57,它们在支气管收缩动物模型中以非常低的剂量具有很高的体内效力,并且作用时间长。